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Dulles Intl

$525+ Cheap flights from Gatwick (LGW) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/20. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — IAD
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
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Cheap flight deals from Gatwick to Dulles Intl

Cheapest flights from Gatwick to Dulles Intl
Explore the most affordable flight options available from Gatwick to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Mytrip deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/188:50 am
LGW
-
IAD
2 stops14h 40m
Multiple Airlines
Wed 2/257:40 pm
IAD
-
LGW
2 stops16h 40m
Multiple Airlines
Deal found 1/21$547
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/66:40 pm
LGW
-
IAD
1 stop25h 40m
SWISS
Sat 3/149:30 pm
IAD
-
LGW
1 stop16h 20m
SWISS
Deal found 1/20$553
This The Travel House deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:15 am
LGW
-
IAD
1 stop12h 30m
SWISS
Mon 10/128:20 pm
IAD
-
LGW
1 stop16h 30m
SWISS
Deal found 1/19$554
This oojo deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:40 pm
LGW
-
IAD
1 stop25h 25m
SWISS
Thu 3/58:30 pm
IAD
-
LGW
1 stop16h 20m
SWISS
Deal found 1/19$555
This Orbitz deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:40 pm
LGW
-
IAD
1 stop27h 00m
Multiple Airlines
Tue 2/101:15 pm
IAD
-
LGW
2 stops23h 35m
Multiple Airlines
Deal found 1/19$556
This TravelUp deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/184:35 pm
LGW
-
IAD
1 stop27h 40m
TAP AIR PORTUGAL
Sun 4/1210:35 pm
IAD
-
LGW
1 stop11h 35m
TAP AIR PORTUGAL
Deal found 1/21$557
This Kiwi.com deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/222:00 pm
LGW
-
IAD
2 stops29h 18m
Multiple Airlines
Mon 1/261:31 pm
IAD
-
LGW
1 stop15h 29m
Multiple Airlines
Deal found 1/19$559
This TravelUp deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/186:40 pm
LGW
-
IAD
1 stop25h 25m
SWISS
Wed 2/255:45 pm
IAD
-
LGW
1 stop19h 05m
SWISS
Deal found 1/20$560
This Kiwi.com deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/292:00 pm
LGW
-
IAD
1 stop23h 40m
Multiple Airlines
Wed 2/47:40 pm
IAD
-
LGW
2 stops13h 50m
Multiple Airlines
Deal found 1/21$562
This Gotogate deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:00 pm
LGW
-
IAD
1 stop34h 00m
TAP AIR PORTUGAL
Mon 3/166:30 pm
IAD
-
LGW
1 stop17h 15m
TAP AIR PORTUGAL
Deal found 1/19$564
This Kiwi.com deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:00 pm
LGW
-
IAD
1 stop22h 24m
Multiple Airlines
Sat 3/218:40 pm
IAD
-
LGW
2 stops31h 55m
Multiple Airlines
Deal found 1/21$568

Find flight deals from Gatwick to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$547
(Mytrip)

One-way from

$525
(Kiwi.com)

Popular in

July

Cheapest in

April

Average price

$695
Provider with most accurate pricing for London Gatwick-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Gatwick-Washington, D.C. Dulles Intl flights.
Search Deals
From London Gatwick to Washington, D.C. Dulles Intl
Search Deals
One-way flight from London Gatwick to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($225 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Gatwick to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Gatwick

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 2/2

7:40 pm-4:30 pm

1 stop25h 50m

Washington, D.C. Dulles Intl

Sun 2/8

6:00 pm-7:00 pm

1 stop20h 00m

$622

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 3/5

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 3/12

8:40 pm-10:55 am

1 stop10h 15m

$633

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 2/20

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Thu 2/26

7:40 pm-10:55 am

1 stop10h 15m

$655

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 3/7

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Tue 3/10

8:40 pm-10:55 am

1 stop10h 15m

$666

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 2/27

10:45 am-9:00 pm

2 stops15h 15m

Washington, D.C. Dulles Intl

Tue 3/3

5:30 pm-9:50 am

1 stop11h 20m

$674

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Mon 3/9

9:25 pm-3:35 pm

2 stops22h 10m

Washington, D.C. Dulles Intl

Tue 3/17

6:30 pm-3:45 pm

1 stop17h 15m

$674

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Sat 2/21

11:55 am-6:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sat 2/28

7:40 pm-10:55 am

1 stop10h 15m

$688

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 3/13

10:40 am-10:00 pm

1 stop15h 20m

Washington, D.C. Dulles Intl

Sun 3/15

11:30 pm-3:45 pm

1 stop12h 15m

$711

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 3/24

11:55 am-7:30 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 4/1

8:30 pm-2:40 pm

1 stop13h 10m

$722

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 3/31

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

Sat 4/18

8:30 pm-2:40 pm

1 stop13h 10m

$729

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 22 results
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  • Most accurate provider: When it comes to deals on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Gatwick Airport-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Gatwick Airport-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Gatwick Airport-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Gatwick to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Gatwick with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

Currently, February is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $445). Flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $823). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    There are many flights that can get you from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in 11h 35m. Fly via Icelandair or TAP AIR PORTUGAL to get the fastest option. Airlines will cover a distance of 3683 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Gatwick to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Gatwick to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Gatwick to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Dulles Intl.

  • Can I find deals for business class flights from Gatwick to Dulles Intl?

    Yes. Cheapflights offers flight deals from Gatwick to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from London Gatwick Airport to Washington, D.C. Dulles Intl Airport (average of $445). Flying from London Gatwick Airport to Washington, D.C. Dulles Intl Airport in August is currently the most expensive (average of $823). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Herndon
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
Largo
Bowie
McLean
Clinton
Upper Marlboro

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